1
|
Wang K, Wang X, Zhang L, Chi Y, Luo Y, Xu W, Wang Y, Qu S. Morphological Analyses and QTL Mapping of Mottled Leaf in Zucchini ( Cucurbita pepo L.). Int J Mol Sci 2024; 25:2491. [PMID: 38473740 DOI: 10.3390/ijms25052491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/07/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024] Open
Abstract
The mottled leaf is one of the agronomic traits of zucchini and can be applied as a marker trait in aggregation breeding. However, the genetic mechanism responsible for mottled leaf has yet to be elucidated. In the present study, we used two inbred lines (line '19': silver mottled leaf; line '113': normal leaf) as parents for the physiological and genetic analysis of mottled leaf. The synthesis and net photosynthetic rate of chlorophyll were not significantly affected in the mottled areas of leaves. However, we detected a large space between the palisade parenchyma in the leaf mottle area of line '19', which may have caused the mottled leaf phenotype. Light also plays an important role in the formation of mottled leaf, and receiving light during the early stages of leaf development is a necessary factor. Genetic analysis has previously demonstrated that mottled leaf is a quantitative trait that is controlled by multiple genes. Based on the strategy of quantitative trait locus sequencing (QTL-seq), two QTLs were identified on chromosomes 1 and 17, named CpML1.1 and CpML17.1, respectively. Two major loci were identified using R/qtl software version 1.66 under greenhouse conditions in April 2019 (2019A) and April 2020 (2020A) and under open cultivation conditions in May 2020 (2020M). The major QTL, CpML1.1, was located in a 925.2-kb interval on chromosome 1 and explained 10.51%-24.15% of the phenotypic variation. The CpML17.1 was located in a 719.7-kb interval on chromosome 17 and explained 16.25%-38.68% of the phenotypic variation. Based on gene annotation, gene sequence alignment, and qRT-PCR analysis, the Cp4.1LG01g23790 at the CpML1.1 locus encoding a protein of the TPX2 family (target protein of Xklp2) may be a candidate gene for mottled leaf in zucchini. Our findings may provide a theoretical basis for the formation of mottled leaf and provide a foundation for the fine mapping of genes associated with mottled leaf. Molecular markers closely linked to mottled leaf can be used in molecular-assisted selection for the zucchini mottled leaf breeding.
Collapse
Affiliation(s)
- Kexin Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Xinyu Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Lijing Zhang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Yichen Chi
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Yusong Luo
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Wenlong Xu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Yunli Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Shuping Qu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| |
Collapse
|
2
|
Shi J, Zhang F, Wang Y, Zhang S, Wang F, Ma Y. The cytochrome P450 gene, MdCYP716B1, is involved in regulating plant growth and anthracnose resistance in apple. Plant Sci 2023; 335:111832. [PMID: 37586420 DOI: 10.1016/j.plantsci.2023.111832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/21/2023] [Accepted: 08/13/2023] [Indexed: 08/18/2023]
Abstract
Apple is one of the main cultivated fruit trees worldwide. Both biotic and abiotic stresses, especially fungal diseases, have serious effects on the growth and fruit quality of apples. Cytochrome P450, the largest protein family in plants, is critical for plant growth and stress responses. However, the function of apple P450 remains poorly understood. In our previous study, 'Hanfu' autotetraploid showed dwarfism and fungal resistance phenotypes compared to 'Hanfu' diploid. Digital gene expression sequencing analysis revealed that the transcript level of MdCYP716B1 was significantly downregulated in the autotetraploid apple cultivar 'Hanfu'. In this study, we identified and cloned the MdCYP716B1 gene from 'Hanfu' apples. The MdCYP716B1 protein fused to a green fluorescent protein was localized in the cytoplasm. We constructed the plant overexpression vector and RNAi vector of MdCYP716B1, and the apple 'GL-3' was transformed by Agrobacterium-mediated transformation to obtain transgenic plants. Overexpressing and RNAi silencing transgenic plants exhibited an increase and decrease in plant height to 'GL-3', respectively. RNAi silencing transgenic plants displayed increased resistance to Colletotrichum gloeosporioides, whereas overexpression transgenic plants were more sensitive to C. gloeosporioides. According to transcriptome analysis, the transcript levels of gibberellin biosynthesis genes were upregulated in MdCYP716B1-overexpression plants. In contrast with 'GL-3', GA3 accumulation was rose in MdCYP716B1-OE lines and impaired in MdCYP716B1-RNAi lines. Collectively, our data indicate that MdCYP716B1 regulates plant growth and resistance to fungal stress.
Collapse
Affiliation(s)
- Jiajun Shi
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, PR China
| | - Feng Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Yangshu Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, PR China
| | - Shuyuan Zhang
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, PR China
| | - Feng Wang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, PR China.
| | - Yue Ma
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, PR China.
| |
Collapse
|
3
|
Wang Y, Wang G, Lin D, Luo Q, Xu W, Qu S. QTL mapping and stability analysis of trichome density in zucchini ( Cucurbita pepo L.). Front Plant Sci 2023; 14:1232154. [PMID: 37636121 PMCID: PMC10457680 DOI: 10.3389/fpls.2023.1232154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/06/2023] [Indexed: 08/29/2023]
Abstract
Trichomes provide an excellent model for studying cell differentiation and proliferation. The aboveground tissues of plants with long dense trichomes (LDTs) can cause skin itching in people working in a zucchini field, in which management, pollination, and fruit harvesting are difficult. In this study, an F2 population was constructed with the LDT inbred line "16" and the sparse micro trichome (SMT) inbred line "63" for QTL analysis of type I and II trichome density. Two QTLs were identified on chromosomes 3 and 15 using the QTL-seq method. Additionally, 191 InDel markers were developed on 20 chromosomes, a genetic map was constructed for QTL mapping, and three QTLs were identified on chromosomes 3, 6, and 15. Two QTLs, CpTD3.1 and CpTD15.1, were identified in both QTL-seq and genetic map-based QTL analyses, and CpTD15.1 was the major-effect QTL. The stability of CpTD3.1 and CpTD15.1 was confirmed using data from F2 plants under different environmental conditions. The major-effect QTL CpTD15.1 was located between markers chr15-4991349 and chr15-5766791, with a physical distance of 775.44 kb, and explained 12.71%-29.37% of the phenotypic variation observed in the three environments. CpTD3.1 was located between markers chr3-218350 and chr3-2891236, in a region with a physical distance of 2,672.89 kb, and explained 5.00%-10.64% of the phenotypic variation observed in the three environments. The functional annotations of the genes within the CpTD15.1 region were predicted, and five genes encoding transcription factors regulating trichome development were selected. Cp4.1LG15g04400 encoded zinc finger protein (ZFP) and harbored nonsynonymous SNPs in the conserved ring finger domain between the two parental lines. There were significant differences in Cp4.1LG15g04400 expression between "16" and "63", and a similar pattern was found between germplasm resources of LDT lines and SMT lines. It was presumed that Cp4.1LG15g04400 might regulate trichome density in zucchini. These results lay a foundation for better understanding the density of multicellular nonglandular trichomes and the regulatory mechanism of trichome density in zucchini.
Collapse
Affiliation(s)
- Yunli Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Guichao Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Dongjuan Lin
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Qinfen Luo
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Wenlong Xu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Shuping Qu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| |
Collapse
|
4
|
Hernandez CO, Labate J, Reitsma K, Fabrizio J, Bao K, Fei Z, Grumet R, Mazourek M. Characterization of the USDA Cucurbita pepo, C. moschata, and C. maxima germplasm collections. Front Plant Sci 2023; 14:1130814. [PMID: 36993863 PMCID: PMC10040574 DOI: 10.3389/fpls.2023.1130814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/22/2023] [Indexed: 06/19/2023]
Abstract
The Cucurbita genus is home to a number of economically and culturally important species. We present the analysis of genotype data generated through genotyping-by-sequencing of the USDA germplasm collections of Cucurbita pepo, C. moschata, and C. maxima. These collections include a mixture of wild, landrace, and cultivated specimens from all over the world. Roughly 1,500 - 32,000 high-quality single nucleotide polymorphisms (SNPs) were called in each of the collections, which ranged in size from 314 to 829 accessions. Genomic analyses were conducted to characterize the diversity in each of the species. Analysis revealed extensive structure corresponding to a combination of geographical origin and morphotype/market class. Genome-wide associate studies (GWAS) were conducted using both historical and contemporary data. Signals were observed for several traits, but the strongest was for the bush (Bu) gene in C. pepo. Analysis of genomic heritability, together with population structure and GWAS results, was used to demonstrate a close alignment of seed size in C. pepo, maturity in C. moschata, and plant habit in C. maxima with genetic subgroups. These data represent a large, valuable collection of sequenced Cucurbita that can be used to direct the maintenance of genetic diversity, for developing breeding resources, and to help prioritize whole-genome re-sequencing.
Collapse
Affiliation(s)
- Christopher O. Hernandez
- Department of Agriculture Nutrition and Food Systems, University of New Hampshire, Durham, NH, United States
| | - Joanne Labate
- Plant Genetic Resource Conservation Unit, United States Department of Agricultural Research Service, Geneva, NY, United States
| | - Kathleen Reitsma
- North Central Regional Plant Introduction Station, Iowa State University, Ames, IA, United States
| | - Jack Fabrizio
- Plant Breeding and Genetics, Cornell University, Ithaca, NY, United States
| | - Kan Bao
- Boyce Thompson Institute, Cornell University, Ithaca, NY, United States
| | - Zhangjun Fei
- Boyce Thompson Institute, Cornell University, Ithaca, NY, United States
- U.S. Department of Agriculture-Agriculture Research Service, Robert W. Holley Center for Agriculture and Health, Ithaca, NY, United States
| | - Rebecca Grumet
- Department of Horticulture, Michigan State University, East Lansing, MI, United States
| | - Michael Mazourek
- Plant Breeding and Genetics, Cornell University, Ithaca, NY, United States
| |
Collapse
|
5
|
Ritonga FN, Zhou D, Zhang Y, Song R, Li C, Li J, Gao J. The Roles of Gibberellins in Regulating Leaf Development. Plants (Basel) 2023; 12:1243. [PMID: 36986931 PMCID: PMC10051486 DOI: 10.3390/plants12061243] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/11/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Plant growth and development are correlated with many aspects, including phytohormones, which have specific functions. However, the mechanism underlying the process has not been well elucidated. Gibberellins (GAs) play fundamental roles in almost every aspect of plant growth and development, including cell elongation, leaf expansion, leaf senescence, seed germination, and leafy head formation. The central genes involved in GA biosynthesis include GA20 oxidase genes (GA20oxs), GA3oxs, and GA2oxs, which correlate with bioactive GAs. The GA content and GA biosynthesis genes are affected by light, carbon availability, stresses, phytohormone crosstalk, and transcription factors (TFs) as well. However, GA is the main hormone associated with BR, ABA, SA, JA, cytokinin, and auxin, regulating a wide range of growth and developmental processes. DELLA proteins act as plant growth suppressors by inhibiting the elongation and proliferation of cells. GAs induce DELLA repressor protein degradation during the GA biosynthesis process to control several critical developmental processes by interacting with F-box, PIFS, ROS, SCLl3, and other proteins. Bioactive GA levels are inversely related to DELLA proteins, and a lack of DELLA function consequently activates GA responses. In this review, we summarized the diverse roles of GAs in plant development stages, with a focus on GA biosynthesis and signal transduction, to develop new insight and an understanding of the mechanisms underlying plant development.
Collapse
Affiliation(s)
- Faujiah Nurhasanah Ritonga
- Shandong Branch of National Vegetable Improvement Center, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Science, Jinan 250100, China
- Graduate School, Padjadjaran University, Bandung 40132, West Java, Indonesia
| | - Dandan Zhou
- Shandong Branch of National Vegetable Improvement Center, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Science, Jinan 250100, China
- College of Life Science, Shandong Normal University, Jinan 250100, China
| | - Yihui Zhang
- Shandong Branch of National Vegetable Improvement Center, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Science, Jinan 250100, China
| | - Runxian Song
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Cheng Li
- Shandong Branch of National Vegetable Improvement Center, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Science, Jinan 250100, China
| | - Jingjuan Li
- Shandong Branch of National Vegetable Improvement Center, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Science, Jinan 250100, China
| | - Jianwei Gao
- Shandong Branch of National Vegetable Improvement Center, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Science, Jinan 250100, China
| |
Collapse
|
6
|
Zhu L, Wang Y, Zhang Z, Hu D, Wang Z, Hu J, Ma C, Yang L, Sun S, Li Y. Chromosomal fragment deletion in APRR2-repeated locus modulates the dark stem color in Cucurbita pepo. Theor Appl Genet 2022; 135:4277-4288. [PMID: 36098750 DOI: 10.1007/s00122-022-04217-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
Cp4.1LG15g03420 (CpDsc-1), which encodes a two-component response regulator-like protein (APRR2) in the nucleus, influences dark green stem formation in Cucurbita pepo by regulating the chlorophyll content. Stem color is an important agronomic trait in zucchini (Cucurbita pepo) for robust seeding and high yield. However, the gene controlling the stem color has not been characterized. In this study, we identified a single locus accounting for the dark green stem color of C. pepo (CpDsc-1). Genetic analysis of this trait in segregated populations derived from two parental lines (line 296 with dark green stems and line 274 with light green stems) revealed that stem color was controlled by a single dominant gene (dark green vs. light green). In bulked segregant analysis, CpDsc-1 was mapped to a 2.09-Mb interval on chromosome 15. This region was further narrowed to 65.2 kb using linkage analysis of the F2 population. Sequencing analysis revealed a 14 kb deletion between Cp4.1LG15g03420 and Cp4.1LG15g03360; these two genes both encoded a two-component response regulator-like protein (APRR2). The incomplete structures of the two APRR2 genes and abnormal chloroplasts in line 274 might be the main cause of the light green phenotype. Gene expression pattern analysis showed that only Cp4.1LG15g03420 was upregulated in line 296. Subcellular localization analysis indicated that Cp4.1LG15g03420 was a nuclear gene. Furthermore, a co-dominant marker, G4563 (93% accuracy rate), and a co-segregation marker, Fra3, were established in 111 diverse germplasms; both of these markers were tightly linked with the color trait. This study provided insights into chlorophyll regulation mechanisms and revealed the markers valuable for marker-assisted selection in future zucchini breeding.
Collapse
Affiliation(s)
- Lei Zhu
- Henan Engineering Technology Research Center of Germplasm Innovation and Utilization of Melon Crops, Henan Agricultural University, Zhengzhou, China
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China
| | - Yong Wang
- Henan Engineering Technology Research Center of Germplasm Innovation and Utilization of Melon Crops, Henan Agricultural University, Zhengzhou, China
| | - Zhenli Zhang
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China
| | - Deju Hu
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China
| | - Zanlin Wang
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China
| | - Jianbin Hu
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China
| | - Changsheng Ma
- Henan Engineering Technology Research Center of Germplasm Innovation and Utilization of Melon Crops, Henan Agricultural University, Zhengzhou, China
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China
| | - Luming Yang
- Henan Engineering Technology Research Center of Germplasm Innovation and Utilization of Melon Crops, Henan Agricultural University, Zhengzhou, China
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China
| | - Shouru Sun
- Henan Engineering Technology Research Center of Germplasm Innovation and Utilization of Melon Crops, Henan Agricultural University, Zhengzhou, China.
- International Joint Laboratory of Horticultural Biology, College of Horticulture, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, China.
| | - Yanman Li
- Henan Engineering Technology Research Center of Germplasm Innovation and Utilization of Melon Crops, Henan Agricultural University, Zhengzhou, China.
| |
Collapse
|
7
|
Wang S, Wang K, Li Z, Li Y, He J, Li H, Wang B, Xin T, Tian H, Tian J, Zhang G, Li H, Huang S, Yang X. Architecture design of cucurbit crops for enhanced productivity by a natural allele. Nat Plants 2022; 8:1394-1407. [PMID: 36509843 DOI: 10.1038/s41477-022-01297-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/31/2022] [Indexed: 05/12/2023]
Abstract
Increasing production efficiency is a top priority in agriculture. Optimal plant architecture is the biological basis of dense planting, high crop yield and labour cost savings, and is thus critical for improving agricultural productivity. In cucurbit crops, most species have elongated internodes, but the path to architecture improvement is still not clear. Here we identified a pumpkin accession with a dominant bushy trait, and found that the associated Bush locus harbours a cucurbit-conserved cis-regulatory element in the 5' untranslated region of a transcription factor gene YABBY1. In cucurbit crops, various B-region deletions enhance the translation of YABBY1, with consequent proportional suppression of stem length in a dose-dependent manner. Depending on different cultivation patterns, the precise deployment of these alleles has significant effects on yield improvement or labour cost saving. Our findings demonstrate that the engineering of the YABBY1 B-region is an efficient strategy to customize plant architecture in cucurbit crops.
Collapse
Affiliation(s)
- Shenhao Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of Ministry of Agriculture, Sino-Dutch Joint Lab of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Kun Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of Ministry of Agriculture, Sino-Dutch Joint Lab of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zheng Li
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Yangyang Li
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Jiao He
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Hongbo Li
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong, China
| | - Bowen Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of Ministry of Agriculture, Sino-Dutch Joint Lab of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Tongxu Xin
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of Ministry of Agriculture, Sino-Dutch Joint Lab of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Haojie Tian
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of Ministry of Agriculture, Sino-Dutch Joint Lab of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jiaxing Tian
- Beijing Vegetable Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Guoyu Zhang
- Beijing Vegetable Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Haizhen Li
- Beijing Vegetable Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Sanwen Huang
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong, China
| | - Xueyong Yang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of Ministry of Agriculture, Sino-Dutch Joint Lab of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China.
| |
Collapse
|
8
|
Cheng F, Song M, Zhang M, Cheng C, Chen J, Lou Q. A SNP mutation in the CsCLAVATA1 leads to pleiotropic variation in plant architecture and fruit morphogenesis in cucumber (Cucumis sativus L.). Plant Sci 2022; 323:111397. [PMID: 35902027 DOI: 10.1016/j.plantsci.2022.111397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/23/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Plant architectures is predominantly determined by branching pattern, internode elongation, phyllotaxis, shoot determinacy and reproductive organs. Domestication or improvement of this critical agronomic trait played an important role in the breakthrough of crop yield. Here, we identified a mutant with fasciated plant architecture, named fas, from an ethyl methanesulfonate (EMS) induced mutant population in cucumber. The mutant exhibited abnormal phyllotaxy, flattened main stem, increased number of floral organs, and significantly shorter and thicker fruits. However, the molecular mechanism conferring this pleiotropic effect remains unknown. Using a map-based cloning strategy, we isolated the gene CsaV3_3G045960, encoding a leucine-rich repeat receptor-like kinase, a putative direct homolog of the Arabidopsis CLAVATA1 protein referred to as CsCLV1. Endogenous hormone assays showed that IAA and GA3 levels in fas stems and ovaries were significantly reduced. Conformably, RNA-seq analysis showed that CsCLV1 regulates cucumber stem and ovary development by coordinating hormones and transcription factors. Our results contribute to the understanding of the function of CsCLV1 throughout the growth cycle, provide new evidence that the CLV signaling system is functionally conserved in Cucurbitaceae.
Collapse
Affiliation(s)
- Feng Cheng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Mengfei Song
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Mengru Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chunyan Cheng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Jinfeng Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Qunfeng Lou
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
9
|
Bo K, Duan Y, Qiu X, Zhang M, Shu Q, Sun Y, He Y, Shi Y, Weng Y, Wang C. Promoter variation in a homeobox gene, CpDll, is associated with deeply lobed leaf in Cucurbita pepo L. Theor Appl Genet 2022; 135:1223-1234. [PMID: 34985539 DOI: 10.1007/s00122-021-04026-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
CpDll, encoding an HD-Zip I transcription factor, positively regulates formation of deeply lobed leaf shape in zucchini, Cucurbita pepo, which is associated with sequence variation in its promoter region. Leaf shape is an important horticultural trait in zucchini (Cucurbita pepo L.). Deeply lobed leaves have potential advantages for high-density planting and hybrid production. However, little is known about the molecular basis of deeply lobed leaf formation in this important vegetable crop. Here, we conducted QTL analysis and fine mapping of the deeply lobed leaf (CpDll) locus using recombinant inbred lines and large F2 populations developed from crosses between the deeply lobed leaf HM-S2, and entire leaf Jin-GL parental lines. We show that CpDll exhibited incomplete dominance for the deeply lobed leaf shape in HM-S2. Map-based cloning provided evidence that CpCll encodes a type I homeodomain (HD)- and Leu zipper (Zip) element-containing transcription factor. Sequence analysis between HM-S2 and Jin-GL revealed no sequence variations in the coding sequences, whereas a number of variations were identified in the promoter region between them. DUAL-LUC assays revealed significantly stronger promoter activity in HM-S2 than that in Jin-GL. There was also significantly higher expression of CpDll in the leaf base of deeply lobed leaves of HM-S2 compared with entire leaf Jin-GL. Comparative analysis of CpDll gene homologs in nine cucurbit crop species (family Cucurbitaceae) revealed conservation in both structure and function of this gene in regulation of deeply lobed leaf formation. Our work provides new insights into the molecular basis of leaf lobe formation in pumpkin/squash and other cucurbit crops. This work also facilitates marker-assisted selection for leaf shape in zucchini breeding.
Collapse
Affiliation(s)
- Kailiang Bo
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Ying Duan
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Xiyan Qiu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Meng Zhang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Qin Shu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Yapei Sun
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Yadi He
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Yuzi Shi
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Yiqun Weng
- USDA-ARS Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, Madison, WI, 53706, USA.
| | - Changlin Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China.
- China Vegetable Biotechnology (Shouguang) Co., Ltd, Shouguang, Shandong, People's Republic of China.
| |
Collapse
|
10
|
Wang Y, Qi C, Luo Y, Zhang F, Dai Z, Li M, Qu S. Identification and mapping of CpPM10.1, a major gene involved in powdery mildew (race 2 France of Podosphaera xanthii) resistance in zucchini (Cucurbita pepo L.). Theor Appl Genet 2021; 134:2531-2545. [PMID: 33914112 DOI: 10.1007/s00122-021-03840-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/17/2021] [Indexed: 06/12/2023]
Abstract
Powdery mildew resistance in zucchini is controlled by one major dominant locus, CpPM10.1. CpPM10.1 was fine mapped. The expression of candidate gene Cp4.1LG10g02780 in resistant individuals was significantly upregulated after inoculation with the powdery mildew. Powdery mildew (PM) is one of the most destructive fungal diseases, reducing the productivity of Cucurbita crops globally. PM influences the photosynthesis, growth and development of infected zucchini and seriously reduces fruit yield and quality. In the present study, the zucchini inbred line 'X10' had highly stable PM resistance, and the inbred line 'Jin234' was highly susceptible to PM in the seedling stage and adult stages. Genetic analysis revealed that PM resistance in 'X10' is controlled by one major dominant locus. Based on the strategy of QTL-seq combined with linkage analysis and developed molecular markers, the major locus was found to be located in a 382.9-kb candidate region on chromosome 10; therefore, the major locus was named CpPM10.1. Using 1,400 F2 individuals derived from a cross between 'X10' and 'JIN234' and F2:3 offspring of the recombinants, the CpPM10.1 locus was defined in a region of approximately 20.9 kb that contained 5 coding genes. Among them, Cp4.1LG10g02780 contained a conserved domain (RPW8), which controls resistance to a broad range of PM pathogens. Cp4.1LG10g02780 also had nonsynonymous SNPs between the resistant 'X10' and susceptible 'Jin234.' Furthermore, the expression of Cp4.1LG10g02780 was strongly positively involved in PM resistance in the key period of inoculation. Further allelic diversity analysis in zucchini germplasm resources indicated that PM resistance was associated with two SNPs in the Cp4.1LG10g02780 RPW8 domain. This study not only provides highly stable PM resistance gene resources for cucurbit crops but also lays the foundation for the functional analysis of PM resistance and resistance breeding in zucchini.
Collapse
Affiliation(s)
- Yunli Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Cong Qi
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Yusong Luo
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Feng Zhang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Zuyun Dai
- Anhui Jianghuai Horticulture Seeds Corporation Limited, Hefei, 230031, China
| | - Man Li
- Anhui Jianghuai Horticulture Seeds Corporation Limited, Hefei, 230031, China
| | - Shuping Qu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, China.
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China.
| |
Collapse
|